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% public domain. no rights reserved. see
% https://creativecommons.org/publicdomain/zero/1.0/
\section{problem}
\begin{frame}
\frametitle{problem}
\centering
``L'' folks are in trouble.
\end{frame}
\begin{frame}
\frametitle{``L'' are in trouble}
\centering
data stored in FSP's\footnote{FSP: File Storage Provider} computers $\ne$ private
\end{frame}
\begin{frame}
\frametitle{the last resort}
\centering
encrypt everything!
\end{frame}
\begin{frame}[fragile]
\frametitle{encrypt everthing}
{\tiny
\begin{semiverbatim}
/^^^^^^^^^^^^\\
| | +-----+
| crypt0 | | |
secret.txt ---> | pr0gr4m | --> secret.txt.cipher --> | FSP |
| | | |
|____________| +-----+
FSP: File Storage Provider (Dropbox, Google Drive, etc).
\end{semiverbatim}
}
\end{frame}
\begin{frame}
\frametitle{not enough}
\centering
our adversaries are too powerful.
\end{frame}
\begin{frame}[fragile]
\frametitle{what if}
{\tiny
\begin{semiverbatim}
+-----+
| |
secret.txt.shard0 ----> | FSP |
+------------+ ^ | 1 |
| / / | | +-----+
| crypt0 | |
secret.txt ---> | pr0gr4m | --|
| / / | |
+____________+ | +-----+
v | |
secret.txt.shard1 ----> | FSP |
| 2 |
+-----+
FSP: File Storage Provider (Dropbox, Google Drive, etc).
\end{semiverbatim}
}
\end{frame}
\begin{frame}
\centering
enter combox
\end{frame}
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